OTEC Emergency Letter


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A basic introduction to the OTEC system of solar power from the sea, based on work by Shamcher Bryn Beorse and Cal Herrmann in the late 1970s.

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OTEC Emergency Letter

  1. 1. OTEC Emergency Letter From Bryn Beorse and Cal Herrmann (originally written in late ‘70s) Slides created April 22, 2007
  2. 2. Ocean Energy <ul><li>Many new energy sources available </li></ul><ul><li>Cheaper, faster to build and ecologically far superior to systems now in use </li></ul><ul><li>Ocean Waves </li></ul><ul><li>Ocean Tides </li></ul><ul><li>Ocean Currents </li></ul><ul><li>Ocean Thermal Energy Conversion </li></ul>
  3. 3. OTEC: Temperature Difference <ul><li>Sun-heated surface water and deeper colder currents creates power </li></ul><ul><li>This is a well-developed power source </li></ul><ul><li>This power source alone could produce all the power the world will ever need </li></ul><ul><li>We have no “energy crisis” whatever, just an ignorance - or a laziness - crisis </li></ul>
  4. 4. Two Types of OTEC Plant <ul><li>OPEN CYCLE </li></ul><ul><ul><li>- Can also desalinate water </li></ul></ul><ul><li>CLOSED CYCLE </li></ul>
  5. 5. Open Cycle <ul><li>Surface water is brought to a boil by removing air from the boiler and thus lowering the pressure. </li></ul><ul><li>There is no heating. </li></ul><ul><li>The steam runs a turbine running a generator. </li></ul><ul><li>The steam is condensed in a condenser into which cold water is pumped from deeper layers. </li></ul><ul><li>The condensed water can be tapped as fresh water. </li></ul>
  6. 6. Closed Cycle <ul><li>The warm surface water heats a working fluid — ammonia or another refrigerant. </li></ul><ul><li>The refrigerant boils and this vapor runs the turbine, after which it is condensed by cold water pumped from below. </li></ul><ul><li>There is no heating. </li></ul><ul><li>The turbine runs a generator to produce electric power. </li></ul>
  7. 7. Plant Types <ul><li>The two types will be suitable for different conditions and requirements. </li></ul><ul><li>Both open and closed plants may be built on shore. </li></ul><ul><li>Both types can be built as ships, either anchored or free-moving in the ocean. </li></ul><ul><ul><li>These may move to where maximum thermal difference may be found. </li></ul></ul>
  8. 8. North American Plant Sites <ul><li>The Gulf of Mexico </li></ul><ul><li>The coast line around Florida </li></ul><ul><li>The Pacific along the Mexican shores </li></ul><ul><li>All provide sites for Ocean Thermal Plants. </li></ul>
  9. 9. Other Plant Types <ul><li>Newer, not yet fully researched types </li></ul><ul><ul><li>Foam </li></ul></ul><ul><ul><li>Mist </li></ul></ul><ul><ul><li>Hybrid cycle plants </li></ul></ul>
  10. 10. OTEC History <ul><li>Ocean thermal plants were first discussed by French, Italian and US engineers and scientists in 1881. </li></ul><ul><li>In the Twenties, the French engineer George Claude built three plants in Paris, Ougre in Belgium (producing 60 Kilowatts) and in Cuba, producing 22 Kilowatts for 11 days. </li></ul>
  11. 11. OTEC History <ul><li>In 1942, the French government began research of systems and components; designed and partly built a plant in West Africa producing 7500 Kilowatts plus fresh water. </li></ul><ul><li>In the late Forties, an American engineer studied the French work and caused the National Bureau of Standards and later the University of California at Berkeley to build and test plants. </li></ul>
  12. 12. OTEC <ul><li>The oil crisis in the 1970’s caused seven major US universities and five large firms to join in this work. </li></ul><ul><li>Ocean “fuel” is free: The ocean itself. </li></ul>
  13. 13. Ocean Thermal Energy Conversion is Benign Solar Power from the Sea <ul><li>Text taken from the Archives of Shamcher Bryn Beorse </li></ul><ul><li>http://www.shamcher.org </li></ul><ul><li>http://shamcher.wordpress.com </li></ul>